31Appendix 2 Display reference tableNO Working conditionIndicatorBuzzerBypassLEDLineLEDInverterLEDBatteryLED Fault LED1 Standby ModeNormal One flashevery 8 secOne beepevery 8 secFault One flashevery 4 secOne beepevery 4 secOverload One flashevery 1 secOne beepevery 1 sec2 Bypass ModeNormal ● One flashevery 2 minOne beepevery 2 minFault ● One flashevery 4 secOne beepevery 4 secOverload ● One flashevery 1 secOne beepevery 1 sec3 Line ModeNormal ● ● NoneFault ● ● One flashevery 4 secOne beepevery 4 secOverload ● ● One flashevery 1 secOne beepevery 1 sec4 Battery ModeNormal ● ● One flashevery 4 secOne beepevery 4 secLow battery voltage ● ★ One flashevery 1 secOne beepevery 1 secOverload ● ● One flashevery 1 secOne beepevery 1 sec5 Battery Self Diagnosis ModeNormal ★ ★ ★ ★ None NoneFault ★ ★ ★ ★ One flashevery 4 secOne beepevery 4 sec